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<meta name="description" content="###Java Mina框架学习使用本文使用mina-2.0.16.jar Apache Mina Server 是一个网络通信应用框架，也就是说，它主要是对基于TCP/IP、UDP/IP协议栈的通信框架（当然，也可以提供JAVA 对象的序列化服务、虚拟机管道通信服务等），Mina 可以帮助我们快速开发高性能、高扩展性的网络通信应用，Mina 提供了事件驱动、异步（Mina 的异步IO 默认使用的">
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<meta name="twitter:description" content="###Java Mina框架学习使用本文使用mina-2.0.16.jar Apache Mina Server 是一个网络通信应用框架，也就是说，它主要是对基于TCP/IP、UDP/IP协议栈的通信框架（当然，也可以提供JAVA 对象的序列化服务、虚拟机管道通信服务等），Mina 可以帮助我们快速开发高性能、高扩展性的网络通信应用，Mina 提供了事件驱动、异步（Mina 的异步IO 默认使用的">



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          <h1 class="post-title" itemprop="name headline">Java-Mina-2-0-16框架学习使用</h1>
        

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        <p>###Java Mina框架学习使用<br><strong>本文使用mina-2.0.16.jar</strong></p>
<p>Apache Mina Server 是一个网络通信应用框架，也就是说，它主要是对基于TCP/IP、UDP/IP协议栈的通信框架（当然，也可以提供JAVA 对象的序列化服务、虚拟机管道通信服务等），Mina 可以帮助我们快速开发高性能、高扩展性的网络通信应用，Mina 提供了事件驱动、异步（Mina 的异步IO 默认使用的是JAVA NIO 作为底层支持）操作的编程模型。<br><a id="more"></a></p>
<p>Mina 同时提供了网络通信的Server 端、Client 端的封装，无论是哪端，Mina 在整个网通通信结构中都处于如下的位置：可见Mina 的API 将真正的网络通信与我们的应用程序隔离开来，你只需要关心你要发送、接收的数据以及你的业务逻辑即可。同样的，无论是哪端，Mina 的执行流程如下所示：<br>(1) IoService：这个接口在一个线程上负责套接字的建立，拥有自己的Selector，监听是否有连接被建立。<br>(2) IoProcessor：这个接口在另一个线程上，负责检查是否有数据在通道上读写，也就是说它也拥有自己的Selector，这是与我们使用<a href="http://lib.csdn.net/base/java" target="_blank" rel="noopener">Java </a>NIO 编码时的一个不同之处，通常在JavaNIO 编码中，我们都是使用一个Selector，也就是不区分IoService与IoProcessor 两个功能接口。另外，IoProcessor 负责调用注册在IoService 上的过滤器，并在过滤器链之后调用IoHandler。<br>(3) IoFilter：这个接口定义一组拦截器，这些拦截器可以包括日志输出、黑名单过滤、数据的编码（write 方向）与解码（read 方向）等功能，其中数据的encode 与decode是最为重要的、也是你在使用Mina 时最主要关注的地方。<br>(4) IoHandler：这个接口负责编写业务逻辑，也就是接收、发送数据的地方。</p>
<ol>
<li>服务器端<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line">/**</span><br><span class="line"> * mina服务器端</span><br><span class="line"> * @author mazaiting</span><br><span class="line"> */</span><br><span class="line">public class MinaServer &#123;</span><br><span class="line">	/**</span><br><span class="line">	 * 监听的端口</span><br><span class="line">	 */</span><br><span class="line">	private static final int PORT = 9123;</span><br><span class="line">	</span><br><span class="line">	public static void start() throws IOException&#123;</span><br><span class="line">		// 1. 创建IoAcceptor</span><br><span class="line">		IoAcceptor acceptor = new NioSocketAcceptor();</span><br><span class="line">		// 2. 加入日志记录过滤器，用SL4J库记录信息</span><br><span class="line">		acceptor.getFilterChain().addLast(&quot;logger&quot;, new LoggingFilter());</span><br><span class="line">		// 3. 加入编码过滤器，用于解码所有收到的信息,使用 new TextLineCodecFactory() r</span><br><span class="line">		// 发送的信息进行编码，返回是MINA自带的，功能有限，只能处理文本戒者String类型。</span><br><span class="line">		acceptor.getFilterChain().addLast(&quot;codec&quot;, new ProtocolCodecFilter(</span><br><span class="line">				new TextLineCodecFactory(Charset.forName(&quot;UTF-8&quot;))));</span><br><span class="line">		// 4. 设置ServerHandler, 自定义的Handler,TimeServerHandler</span><br><span class="line">		acceptor.setHandler(new TimerServerHandler());</span><br><span class="line">		// 5. 设置Session的对应I/O processor读缓存区大小2048，通常这个参数不需要设置</span><br><span class="line">		acceptor.getSessionConfig().setReadBufferSize(2048);</span><br><span class="line">		// 6. 设置空闲时间， 这里的BOTH_IDLE指EADER_IDLE和WRITER_IDLE都为10秒</span><br><span class="line">		acceptor.getSessionConfig().setIdleTime(IdleStatus.BOTH_IDLE, 10);</span><br><span class="line">		// 7. 绑定监听端口9123.</span><br><span class="line">//		acceptor.bind(new InetSocketAddress(&quot;localhost&quot;,PORT));</span><br><span class="line">		acceptor.bind(new InetSocketAddress(PORT));	</span><br><span class="line">	&#125;</span><br><span class="line">	</span><br><span class="line">	public static void main(String[] args) throws IOException &#123;</span><br><span class="line">		start();</span><br><span class="line">	&#125;</span><br><span class="line">	</span><br><span class="line">	/**</span><br><span class="line">	 * 服务器端消息处理器</span><br><span class="line">	 * @author mazaiting</span><br><span class="line">	 */</span><br><span class="line">	public static class TimerServerHandler extends IoHandlerAdapter&#123;</span><br><span class="line">		@Override</span><br><span class="line">		public void exceptionCaught(IoSession session, Throwable cause) throws Exception &#123;</span><br><span class="line">			/**</span><br><span class="line">			 * 自定义异常处理， 要不然异常会被“吃掉”；</span><br><span class="line">			 */</span><br><span class="line">			cause.printStackTrace();</span><br><span class="line">		&#125;</span><br><span class="line">		@Override</span><br><span class="line">		public void messageReceived(IoSession session, Object message) throws Exception &#123;</span><br><span class="line">			/**</span><br><span class="line">			 * 对接收到的消息（已经解码）迕行下一步处理，这里对收到的字符串进行判断，</span><br><span class="line">			 * 如果是”quit”则断开连接；否则输出当前时间的字符串格式；</span><br><span class="line">			 */</span><br><span class="line">			String str = message.toString();</span><br><span class="line">			if (str.trim().equalsIgnoreCase(&quot;quit&quot;)) &#123;</span><br><span class="line">				session.closeNow();</span><br><span class="line">				return;</span><br><span class="line">			&#125;</span><br><span class="line">			Date date = new Date();</span><br><span class="line">			session.write(date.toString());</span><br><span class="line">			System.out.println(&quot;Message written...&quot;);</span><br><span class="line">		&#125;</span><br><span class="line">		@Override</span><br><span class="line">		public void sessionIdle(IoSession session, IdleStatus status) throws Exception &#123;</span><br><span class="line">			/**</span><br><span class="line">			 * 当Session处于IDLE状态的时候，输出空闲状态次数；</span><br><span class="line">			 */</span><br><span class="line">			System.out.println(&quot;IDLE:&quot; + session.getIdleCount(status));</span><br><span class="line">		&#125;</span><br><span class="line">	&#125;</span><br><span class="line">	</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
</li>
</ol>
<p>运行代码，在cmd(命令提示符) 中输入”telnet 127.0.0.1 9123”，连接成功后随意输入字符，并按下回车，即可看到当前时间。</p>
<ol start="2">
<li>客户端<figure class="highlight plain"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line">/**</span><br><span class="line"> * mina客户端</span><br><span class="line"> * @author mazaiting</span><br><span class="line"> */</span><br><span class="line">public class MinaClient &#123;</span><br><span class="line"></span><br><span class="line">	/**</span><br><span class="line">	 * 监听的端口</span><br><span class="line">	 */</span><br><span class="line">	private static final int PORT = 9123;</span><br><span class="line">	</span><br><span class="line">	public static void start() &#123;</span><br><span class="line">		IoConnector connector = new NioSocketConnector();</span><br><span class="line">		connector.setConnectTimeoutMillis(30000);</span><br><span class="line">		connector.getFilterChain().addLast(&quot;codec&quot;, new ProtocolCodecFilter(</span><br><span class="line">				new TextLineCodecFactory(Charset.forName(&quot;UTF-8&quot;), </span><br><span class="line">				LineDelimiter.WINDOWS.getValue(),</span><br><span class="line">				LineDelimiter.WINDOWS.getValue())));</span><br><span class="line">		connector.setHandler(new ClientHandler(&quot;你好！\r\n 大家好！&quot;));</span><br><span class="line">		connector.connect(new InetSocketAddress(&quot;localhost&quot;, 9123));		</span><br><span class="line">	&#125;</span><br><span class="line">	</span><br><span class="line">	public static void main(String[] args) &#123;</span><br><span class="line">		start();</span><br><span class="line">	&#125;</span><br><span class="line">	</span><br><span class="line">	</span><br><span class="line">	private static class ClientHandler extends IoHandlerAdapter&#123;</span><br><span class="line">		private String values;</span><br><span class="line">		public ClientHandler(String values) &#123;</span><br><span class="line">			this.values = values;</span><br><span class="line">		&#125;</span><br><span class="line">		@Override</span><br><span class="line">		public void sessionOpened(IoSession session) throws Exception &#123;</span><br><span class="line">			session.write(values);</span><br><span class="line">		&#125;</span><br><span class="line">		@Override</span><br><span class="line">		public void messageReceived(IoSession session, Object message) throws Exception &#123;</span><br><span class="line">			System.out.println(message.toString());</span><br><span class="line">		&#125;</span><br><span class="line">	&#125;</span><br><span class="line">&#125;</span><br></pre></td></tr></table></figure>
</li>
</ol>
<p><a href="http://git.oschina.net/zaitingma/codes/jl50z7mcihew981y3obxq29" target="_blank" rel="noopener">代码下载</a></p>

      
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